kelly



(No Model.) 5 Sheets-Sheet 1'. W. E. KELLY.

STEAM GENERATOR.

No. 350,201. Patented Oct. 5, 1886.

\k I N. PETERS. Fholo-Lllhogrlphon Washington. D. c.

(No Model.) 5'Sheets-Sheet 2.

W. E. KELLY.

STEAM GENERATOR- No. 350,201. Patented Oct. 5, 1886.

(No Model.) 5 Sheets-Sheet 3.

W. E. KELLY.

STEAM GENERATOR.

Patented 001;. 5.1886.

N. PETERS. Plwwume n hcr. Wuhingwn. Pi G 5 Sheets-Sheet 4.

(No Model.)

W. E. KELLY.

STEAM GENERATOR.

No. 350,201. Patented Oct. 5, 1886.

lily/4Z0) N. PETERS. Phomiiflwgmphur, Wnshmglun, D. c.

(No Model.) 5 Sheets-Sheet 5. W. E. KELLY.

STEAM GENERATOR. No. 350,201. Patented Oct. 5, 1886.

Illllll'gIlllli/A Nv PETERS. Phuloilhographer. Wiihmglnn, D, c.

NITED STATES ATENT QFFIcE.

XVILLIAM E. KELLY, OF NEIV BRUNSWICK, NFAV JERSEY.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 350,201, dated October 5,1886.

Application filed March 3], 1886. Serial No. 197,306. (No model.)

To aZZ whom it may concern:

Be it known that I, \ViLLIAM E. KELLY, of Xew Brunswick, in the county of Middlesex and State of New Jersey, have invented a certain new and useful Improvement in Steam- Generators, of which the following is a specification.

My improvement relates to the parts termed headers, which are employed to connect the ends of tubes in tubularsteam-generators.

My improvement has for its object to provide a novel and effective means for closing such headers.

In my improvement I employ, in conjunction with a header for closingit,a cap or cover having a bearing against the inner surface of the face or side of the header, in which is arranged the opening to be closed. The means for securing the cap or coverin place force the latter outwardly, while their thrust is sustained in rear of the cap or cover. Steampressure,forcing or tending to force the cap or cover outwardly,a ts to tighten rather than to loosen the joint.

In the accompanying drawings, Figure 1 is a side view of the steam-generator comprising headers of thekind to which my improvement relates. Fig. 2 is a front view of a group of headers embodying my improvement and nippled together. Fig. 3 is a vertical section of headers shown in Fig. 2. Fig. l is a front view of a group of headers like those shown in Figs. 2 and 3, except that certain of them are cast together. Fig. 5 is a vertical section like Fig. 3, only it shows but one header, and illustrates certain modifications. Fig. 6 is a vertical section like Fig. 5, except that it illustrates certain differences of detail. Fig. 7 is a vertical section of a header such as I have shown in the similar views, Figs. 8, 5, and 6, except that it includesa different means for operating the cap or cover. Fig. Sis a front view of a group of headers having a different arrangement of hand-holes and caps or covers. Fig. 9 is a vertical section of headers shown in Fig. 8. Fig. 10 is a front view of a group of headers severally having but two tubes connected thereto and embodying my improvement. Fig. 11 is a front view of a group of rhomboidal headers embodying my improvement. Fig. 19 is a front view of a group of headers, which are similar to those shown in Fig. 11, except that they have different]y-arranged hand-holes and caps or covers. Fig. 21 is a front view of a group of headers, which are similar to those shown in Fig. 11, except that they have dif ferent hand-holes and caps or covers. Fig. 12 is a front view of a group of rectangularheaders embodying my improvement, and sever- 6o ally having four tubes connected to it. Fig. 13 is a vertical section of a header having a single tube connected to it and embodying my improvement. Fig. 14 is a view similar to Fig. 13, but showing certain differences of de- 6 5 tail. Figs. 15 and 16 are views similar to Fig. 13, but illustrating differences of detail. Fig. 17 is a vertical section taken parallel to the front of a header, such as I have represented in Figs. 15 and 16. Fig. 18 is a front view of two long horizontal headers having hand-holes opposite the several tubes which are connected to the headers and embodying myimprovement. Fig. 20 is a front view of a sinuous header embodying my improvement.

Similar letters of reference designate correspending parts in all the figures.

I will first describe the steam generator which I have shown in Fig. 1 to illustrate the use of headers embodying my improvement, 8 promising, however, that the headers are not confined in their application to steam-genera tors of this style.

A designates a number of tubes, which are arranged upon an incline, and. subjected to the influence of heated products of combustion from a furnace. These tubes are connected at the ends to headers B, and the headers B are united one above another and connected with a drum, 0, so that water, when. sufficiently 9c heated, and steam may ascend through the inclined tubes and rise through the headers 13, to which the upper ends of the inclined tubes are connected, into the drum 0, and so that the cooler water will descend from. the drum 0 5 into and through the headers to which the lower ends of the inclined tubes are connected, and pass from these headers into the inclined tubes. The inclined tubes are preferably secured to the headers by expanding their ends :00 into holes in the headers.

I will now particularly describe the various angular, but has the lower portions of the sides chamfered off vertically, the upper portions of the sides extended vertically, and a flat top.

I have in this figure shown four of these head ers connected together one above the other by intermediate nipples, D, which will preferably be secured in the openings (1 of theheaders, in which they fit by expanding them into such openings. Vfater will flow from one header to another arranged above or below it through I 5 theconnecting-nipple. Any desirable number of the headers may of course be similarly ar-. ranged and connected.

In Fig. 4 I have shown that headers, such as I have illustrated in Figs.'2 and 3, arranged one above another, may be cast integral, so as to formfone structure. Any desirable number ofheadersinay be cast together in this man ner.

Each of the headers shown in Figs. 2 and 4 has three holes or openings, 1) b I), for the reception of tubes A, such as I have illustrated in Fig. 1. Each of these headers has in the front a hand-hole or opening, b", of approximately triangular shape; but the corners will 0 preferably be rounded. This opening b is closed by a cap or cover, 13', which is of the same shape as the opening I)", only slightly larger, and is preferably provided with a rib, If. This cap or cover is inserted edgewise 3 5 through the opening I)", and then adjusted into place by the aid of handles 1), with which it is furnished, so that its rib If will fit the edge of the opening, and its portion which extends beyond the rib will fit against the back of that wall or sideot' the header in which the opening I) is arranged. A packing of soft suitable material may be interposed between the edge portion of the cap and the rear surface of the front of the header.

5 The cap or cover B is secured in place by means of a screw, 13', whereby it is forced outward. In Fig. 3 this screw is shown as having an end bearing in the back of the header. It can rotatein this bearing. It passes through the cap or cover D, and engages with a screwthrcad which is formed in the cap or cover. By engaging the cap or cover with the screw,

.fitting the latter in its bearing and rotating it, the cap or cover may be'forced outwardly to its place. A jam-nut,'E, may be applied to the screw outside the cap or cover.

I have shown in Fig. 5 that, instead of forming a screw-thread in the cap or cover, I may fit in the cap or cover an internally-sciew- 6o threaded bushing, S, for engaging with the screw. The bushing must be shaped externally so that it will not turn in the cap or cover. It will be observed that the rear portion of the screw is smaller in diameter than 6 5 the forward part, where the screw thread is located. This reduces the liability of incrus tatious on the screw interfering with the adjustment of the cap or cover. It also expedites the moving of the cap or cover to its place, because the cap or cover,'when the screw is thus made, does not need to be adjusted along an unnecessary length of screw-thread.

In Fig. 6 the screw B has a righthand screw-thread atone end and alel't-hand thread at the other. 'One end is inserted in a tapped hole in the back of the header, and the other end engages with a nut, G, which is fitted into the cap or cover B. This nut has apolygonal boss, to which a wrench may be fitted for the purpose of rotating it within the cap or cover, and around the screw. Thus the cap or cover will be forced outwardly. A packing may be used around the nut, if desirable. Of course I. may use a second nut upon the nut G, to clamp against the outer side of the cap or cover.

Fig. 7 illustrates that a screw, B, maybe made to turn loosely in the cap or cover with out engaging therewith, and to screw into a tapped socket, 0, in the rear wall of the head er. This socket 0 will preferably beextended rearward, so as not to interfere with a free flow of water through the header. A jam-nut, E, may be applied to the outer end of the screw, and bear against the outer surface of the cap or cover. a

Figs. 8 and 9 show that a header such as I have described may have one elliptical handhole, I), and one circular hand-hole, 1), instead of a single large triangular hand-hole. The two hand-holes will have caps or covers B of corresponding shapes combined with them. The cap or cover for the small hand-hole will be inserted through the large hand-hole. It will then be engaged with the screw Bflivhereby it is to be secured in place. The screw B", in this case, has a bearing in a tripod, B, which bears against the rear wall of the header, and is centered by one of the tubes A. The tripod may indeed be made resilient and then can be made to hug the end of the tube so as to re inainin place. It is not intended to rotate. The screw 13 will be rotated after engagement with the tripod to force the cap or cover with which it engages outwardly to its place. A janrnut, E, may be combined with the outer end of the screw. The cap or cover for the large elliptical hand-hole will be afterward inserted in the header and forced to its place by rotating a screw, 13, which engages with it and has a bearing in the rear wall of the header. A jam-nut, E, is shown as applied to its outer end. This elliptical hand-hole extends opposite to two tubes A.

In Fig. 10 I have shown a group of headers severally having two tubes A connected thereto. Opposite the openings which receive these tubes there isinthe front wall of each header an elliptical hand-hole b. The cap or cover for such hand-hole is like the cap or cover for the elliptical hand-hole shown in Figs. 8 and 9, and is forced and held in place in like manner.

In Fig. 11 I have shown headers approximately rhomboidal'in shape.

Each has four tubes A connected to it. There is a rhomboidal hand-hole, Z)", in the front wall of each header, and this hole has a similarly-shaped cap or cover combined with it. The cap or cover may be forced to its place and held there by a screw operating in any of the ways illustrated by Figs. 3, 5, 6, 7, 15, and 16. Similarlyshaped headers are shown in Fig. 19,but here differently-shaped hand-holes are provided. Small circular hand-holes 0*, like the circular hand-holes 1) shown in Figs. 8 and 9, are provided. They may have combined with them similarly-shaped caps or covers. An elliptical hand-hole, B, is also provided in each of these headers. The small circular caps or covers may be inserted through the elliptical hand-hole and secured in place by screws used like those which are shown in Figs 8 and 9, as combined with the caps for the circular hand-holest here illustrated. The caps or covers for the elliptical hand-holes b in Fig. 19 may be secured in place in the same man ner as the caps or covers for the elliptical handholes in Figs. 8 and 9 are shown as secured in place. I desire to cover, broadly, the idea of using one or more large hand-holes and a number ofsmall hand-holes in asingle header in substantially the manner described.

In Fig. 21. I have shown similarly-shaped headers severally having two elliptical handholes extending each opposite two tubes A.

With these elliptical hand-holes, caps or covers of likeshape are combined. They may be forced into place and held there in any of the ways in which the caps or covers illustrated in Figs. 3, 5, 6, 7, 15, and 16 are secured in place.

In Fig. 12 I have shown a rectangularheader having four tubes or pipes A secured to it. It has two elliptical openings, b, in the front, and to these are fitted two similarly-shaped caps or covers, B, which are secured in place in the same way as the others, as shown in 3, 5,6. 7, 15, and 16.

In Figs. 13, 11, 15,16, and 17 I have shown a rectangular header having one or more tubes A secured to it, and provided with a single opening opposite each tube. The screw B, employed to secure the cap or cover in place, is supported at one end in a tripod in the example of my improvement shown in Figs. 13 and 14. In the example of my improvement shown in Fig. 13, the tripod bears against the back of the header, and is centered by bearing against the end of the tube A, as shown in Fig. 9. The screw B" is combined with the cap or cover 13', as illustrated in Figs. 2 and 9. In the example of my improvement shown in Fig. 1.4, the screw is rigidly connected to the tripod, and combined with a nut, G, like the screw and cover shown in Fig. 6. A

jam nut, E, is shown as combined with the nut G. The screw is not intended to rotate in the example of the improvement shown in Fig. 11. The bridge-piece in this example of my improvement bears against the end of the tube or pipe A, and is centered by thelatter.

The headers shown in Figs. 13 and 1-L severally have an elliptical opening, b, and a similarlyshaped cap or cover.

The headers shown in Figs. 15, 16, and 17, severally, have a bar-shaped bridge-piece, I, inserted in sockets or cavities c, in the top and bottom or sides of the header. In the front of these headers. and opposite the end of each tube, is an elliptical hand-hole, with which is combined a cap or cover of the same shape. The cap or cover shown in Fig. 15 is secured in place by a screw, 13*, which rotates loosely in the cap or cover, engaged with a tapped hole in the bridge-piece. The cap or cover shown in Fig. 16 is secured in place by a screw, B, which has a bearing in the bridge-piece, but does not screw into it. This screw engages with a tapped hole in the cap or cover. Outside the cap or cover a jam-nut engages with the screw and clamps it against the cover.

Fig. 18 illustrates two long horizontal headers, having elliptical hand-holes b in the front, and elliptical caps or covers, which may be secured in place according to any of the ways illustrated in Figs. 3, 5, 6, 7, 9, 13, 14, 15, or 16.

Fi 20 shows a sinuous header which may be composed of any number of sections con nected by nipples D, or may be made in one piece or casting. In the front are elliptical hand-holes b, having similarly-shaped caps or covers, which may be secured in place by any of the ways shown in Figs. 3, 5,6, 7, 9, 13, 14, 15, or 16.

\VhatI claim as my invention, and desire to secure by Letters Patent, is

1. The combination of a header, a cap or cover inside the same, and a securing device forcing the cap or cover outwardly from the rear, substantially as specified.

2. The combination of a header, a cap or cover inside the same, and a screw having a bearing in rear of the cap or cover, and forcing the latter outwardly, substantially as speci fied.

3. The combination of a header, a cap or cover inside the same, a screw having a hear ing in rear of the cap or cover, and a nut for securing the cap or cover in place, substantially as specified.

4. The combination of a header, a cap or cover therefor, and a rotary screw having a bearing in rear of the cap or cover, and forc ing the latter outwardly, substantially as specified.

5. The combination of inclined tubes, head ers connected to the tubes and connected together in groups or sets beyond opposite ends of the tubes, caps or covers for hand-holes in the headers, arranged inside the headers and securing devices forcing the caps or covers outwardly from the rear, substantially as speeitied.

XVILLIAM E. KELLY. \Vitnesscs:

R. A. IIANCOCK, W. C. CAMPBELL.

IIO 

